公开(公告)号：US20160011786A1

公开(公告)日：2016-01-14

申请号：US14766847

申请日：2013-07-31

Applicant: HITACHI, LTD.

Inventor： Kenta NINOSE ,  Junji OGAWA

IPC: G06F3/06

CPC classification number: G06F3/0608 ,  G06F3/0616 ,  G06F3/0659 ,  G06F3/0661 ,  G06F3/0679 ,  G06F3/0688 ,  G06F11/108 ,  G06F12/0246 ,  G06F2211/1014 ,  G06F2212/401 ,  G06F2212/7204 ,  G06F2212/7207 ,  G06F2212/7208

Abstract: A storage system includes a plurality of storage devices, each including a storage medium and a compression function for data, and a storage controller coupled to the plurality of storage devices. The storage controller includes compression necessity information indicating necessity of compression of the data in a write command to be transmitted to a storage device at a write destination among the plurality of storage devices. The storage device at the write destination writes, when the compression necessity information included in the received write command indicates that compression is unnecessary, the data in the storage medium without compressing the data.

Abstract translation: 存储系统包括多个存储设备，每个存储设备包括存储介质和用于数据的压缩功能，以及耦合到多个存储设备的存储控制器。 存储控制器包括指示要在多个存储装置中的写入目的地发送到存储装置的写入命令中数据的压缩的必要性的压缩必要性信息。 写入目的地的存储装置在包含在接收到的写入命令中的压缩必要性信息指示不需要压缩时写入存储介质中的数据而不压缩数据。

公开(公告)号：US20180275894A1

公开(公告)日：2018-09-27

申请号：US15542446

申请日：2015-01-20

Applicant: HITACHI, LTD.

Inventor： Yukihiro YOSHINO ,  Shigeo HOMMA ,  Kenta NINOSE

IPC: G06F3/06 ,  G06F11/07

CPC classification number: G06F3/0616 ,  G06F3/0647 ,  G06F3/0688 ,  G06F3/0689 ,  G06F11/0727 ,  G06F11/076 ,  G06F11/1076

Abstract: According to one aspect of the present invention, the storage system has a storage controller and a plurality of storage devices. Each storage device calculates its degradation level based on an error bit count (number of correctable errors that have occurred during read), and transmits the same to the storage controller. By calculating the life of each RAID group based on the received degradation levels of the respective storage devices, the storage controller specifies the RAID group predicted to reach its life before achieving a target service life (target life), and migrates the data stored in the specified RAID group to a different RAID group.

公开(公告)号：US20180061498A1

公开(公告)日：2018-03-01

申请号：US15556680

申请日：2015-06-19

Applicant: Hitachi, Ltd.

Inventor： Yohei HAZAMA ,  Junji OGAWA ,  Kenta NINOSE

IPC: G11C16/26 ,  G11C16/34 ,  G11C11/56 ,  G06F11/10 ,  G06F3/06

CPC classification number: G11C16/26 ,  G06F3/067 ,  G06F3/0688 ,  G06F11/1048 ,  G06F11/1068 ,  G06F11/1076 ,  G06F12/16 ,  G11C11/5642 ,  G11C16/349 ,  G11C2211/5648

Abstract: A flash memory controller is configured to hold a read pattern defining an order of selection of read options specifying a parameter value for a read from the flash memory chip. The flash memory controller is configured to execute error correction on data read from the flash memory chip in accordance with the read command. The flash memory controller is configured to designate a next read option specified in the read pattern to read the data from the flash memory chip in a case where all errors in the read data are not corrected by the error correction.

公开(公告)号：US20160259675A1

公开(公告)日：2016-09-08

申请号：US14425556

申请日：2014-08-27

Applicant: HITACHI, LTD.

Inventor： Kenta NINOSE ,  Takuji ITOU ,  Fumio YOSHIOKA ,  Takashi TSUNEHIRO ,  Go UEHARA ,  Shigeo HOMMA

IPC: G06F11/07

CPC classification number: G06F11/079 ,  G06F11/0727 ,  G06F11/0751 ,  G11C11/5678 ,  G11C11/5685 ,  G11C29/52 ,  G11C29/76 ,  G11C29/765

Abstract: A failure region is specified when a failure occurs in a non-volatile semiconductor memory. When a device controller reads data stored in a specific page in a plurality of non-volatile semiconductor memories to detect an uncorrectable error (UE) of the data stored in the specific page, the device controller executes a diagnosis process including specifying a specific storage circuit that is a storage circuit including the specific page, reading data stored in a part of blocks of the specific storage circuit, and specifying, on the basis of a result of reading data stored in the block, a failure region in the specific storage circuit.

Abstract translation: 当在非易失性半导体存储器中发生故障时指定故障区域。 当设备控制器读取存储在多个非易失性半导体存储器中的特定页面中的数据以检测存储在特定页面中的数据的不可校正错误（UE）时，设备控制器执行诊断处理，包括指定特定存储电路 即包括特定页面的存储电路，读取存储在特定存储电路的块的一部分中的数据，并且基于读取存储在该块中的数据的结果来指定特定存储电路中的故障区域。

公开(公告)号：US20160019159A1

公开(公告)日：2016-01-21

申请号：US14773116

申请日：2013-10-10

Applicant: HITACHI, LTD.

Inventor： KEISUKE UEDA ,  Go UEHARA ,  Kenta NINOSE ,  Hiroshi HIRAYAMA

IPC: G06F12/10

CPC classification number: G06F12/10 ,  G06F3/06 ,  G06F3/0608 ,  G06F3/0616 ,  G06F3/0631 ,  G06F3/0653 ,  G06F3/0689 ,  G06F3/08 ,  G06F12/0246 ,  G06F2212/65 ,  G06F2212/7202 ,  G06F2212/7204

Abstract: Provided is a storage system including: a storage medium including a plurality of physical storage areas having an upper limit number of rewrites, and a medium controller that controls I/O (input/output) of data to/from the plurality of physical storage areas; and a storage controller connected to the storage medium, wherein when any of the physical storage areas is not allocated to a write destination logical storage area among a plurality of logical storage areas, the medium controller allocates a vacant physical storage area among the plurality of physical storage areas to the write destination logical storage area and writes write target data to the allocated vacant physical storage area, and the plurality of logical storage areas includes an available logical area group determined based on a relationship between an available capacity of a logical storage capacity and a rewrite frequency of the plurality of physical storage areas.

Abstract translation: 提供一种存储系统，包括：存储介质，包括具有上限重写数量的多个物理存储区域，以及媒体控制器，其控制到/来自多个物理存储区域的数据的I / O（输入/输出） ; 以及连接到所述存储介质的存储控制器，其中当所述物理存储区域中的任何一个没有被分配给多个逻辑存储区域中的写入目的地逻辑存储区域时，所述介质控制器分配所述多个物理存储区域中的空闲物理存储区域 存储区域写入到写入目的地逻辑存储区域，并将写入目标数据写入到所分配的空闲物理存储区域中，并且所述多个逻辑存储区域包括基于逻辑存储容量的可用容量与 多个物理存储区域的重写频率。

公开(公告)号：US20180203631A1

公开(公告)日：2018-07-19

申请号：US15744671

申请日：2015-11-27

Applicant: HITACHI, LTD.

Inventor： Tomotaro DOI ,  Shigeo HOMMA ,  Kenta NINOSE

IPC: G06F3/06

CPC classification number: G06F3/0634 ,  G06F3/0604 ,  G06F3/0616 ,  G06F3/064 ,  G06F3/0652 ,  G06F3/0653 ,  G06F3/0688 ,  G06F12/0246 ,  G06F12/16 ,  G06F2212/1016 ,  G06F2212/7211

Abstract: A storage system according to one aspect of the present invention includes a plurality of storage devices using flash memory as a storage medium. The flash memory used for the storage device may include flash memory configured to operate each cell as a cell capable of storing n-bit information or a cell capable of storing m-bit information (where n

公开(公告)号：US20170308722A1

公开(公告)日：2017-10-26

申请号：US15509732

申请日：2014-10-27

Applicant: Hitachi, Ltd.

Inventor： Yoshihiro OIKAWA ,  Hiroshi HIRAYAMA ,  Kenta NINOSE

IPC: G06F21/80 ,  G06F11/10 ,  G06F3/06 ,  G06F11/08 ,  G06F12/16 ,  G06F11/14

CPC classification number: G06F11/1076 ,  G06F3/0619 ,  G06F3/064 ,  G06F3/0649 ,  G06F3/0685 ,  G06F12/00 ,  G06F12/0246 ,  G06F12/16 ,  G06F21/78 ,  G06F2212/7211

Abstract: A nonvolatile memory device includes: a nonvolatile memory including a plurality of physical blocks; and a memory controller configured to execute an internal process of migrating data between physical blocks. The memory controller is configured to select, based on an update frequency level which is identified with respect to a logical address range from a higher-level apparatus, a physical block to be allocated to the logical address range from among the plurality of physical blocks. The memory controller is configured to determine, in the internal process, whether to set a migration destination level (an update frequency level of a migration destination physical block) to a same level as or a different level from a migration source level (an update frequency level of a migration source physical block) based on whether or not an attribute of the migration source physical block satisfies a prescribed condition.

公开(公告)号：US20130326139A1

公开(公告)日：2013-12-05

申请号：US13963440

申请日：2013-08-09

Applicant: Hitachi, Ltd.

Inventor： Kenta NINOSE ,  Tomohiro KAWAGUCHI ,  Yoshiaki EGUCHI

IPC: G06F3/06

CPC classification number: G06F3/0629 ,  G06F3/0608 ,  G06F3/0614 ,  G06F3/0617 ,  G06F3/0631 ,  G06F3/0665 ,  G06F3/0689 ,  G06F11/1092 ,  G06F11/2082

Abstract: A storage system including: a controller; and, a plurality of physical storage devices coupled to the controller and constituting a RAID group; wherein the controller provides one or more logical volumes belonging to the RAID group, each of the one or more logical volumes having a plurality of storage areas; and one or more virtual volumes, wherein, when receiving a write request to a virtual volume of the one or more virtual volumes, the controller is configured to: allocate a storage area in a logical volume to the virtual volume, as an allocated storage area, where reliability of the storage area is used as a criterion in a selection of the storage area for allocation to the virtual volume; and write data to the allocated storage area, wherein, the controller is configured to selectively perform a RAID allocation process to a storage area allocated to a virtual volume.

Abstract translation: 一种存储系统，包括：控制器; 以及耦合到所述控制器并构成RAID组的多个物理存储设备; 其中所述控制器提供属于所述RAID组的一个或多个逻辑卷，所述一个或多个逻辑卷中的每一个具有多个存储区域; 以及一个或多个虚拟卷，其中，当向所述一个或多个虚拟卷的虚拟卷接收到写请求时，所述控制器被配置为：将逻辑卷中的存储区分配给所述虚拟卷，作为所分配的存储区 其中存储区域的可靠性被用作选择用于分配给虚拟卷的存储区域的标准; 并将数据写入所分配的存储区域，其中，所述控制器被配置为选择性地向分配给虚拟卷的存储区域执行RAID分配处理。